But you actually have to sit in the plane and go to Madrid and Frankfurt to pull this off, right? $2200 is nothing, but days and days of time in an airplane isn't worth it.
I have a netbook with my full dev environment and 15 hours worth of battery life. I actually get a lot of good work done on the plane. And, I get a lot of uninterrupted time to code in my hotel.
Its also part of the way I'm wired. I grew up as a nomad of sorts, and I've been really stationary for the last 3 years, so getting to travel scratches an huge itch for me and it clears my mind so I can get into flow and code.
I wonder if I could find someone willing to fly on fake papers to take the actual trips to Spain and Germany. Airline security blows; they'd use their own papers in (say) Spain.